package com.market.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;

import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;

public class FileUtils {
	/**
	 * 1. read excel
	 * 2. write excel
	 * @param args
	 */
	public static void main(String[] args) {
		String pathname = "D:/workspace/test/test.xlsx";
		FileUtils.readSheetWithFormular(pathname);
	}
	
	@SuppressWarnings("resource")
	public static void readSheetWithFormular(String pathname) {
		if (null == pathname || "".equals(pathname)) {
			return;
		}
		try {
			File file = new File(pathname);
			FileInputStream inputStream = new FileInputStream(file);
			HSSFWorkbook workbook = new HSSFWorkbook(inputStream);
			//Get first sheet from the workbook
            HSSFSheet sheet = workbook.getSheetAt(0);
			 //Iterate through each rows from first sheet
            Iterator<Row> rowIterator = sheet.iterator();
            while(rowIterator.hasNext()) {
                Row row = rowIterator.next();
                 
                //For each row, iterate through each columns
                Iterator<Cell> cellIterator = row.cellIterator();
                while(cellIterator.hasNext()) {
                     
                    Cell cell = cellIterator.next();
                     
                    switch(cell.getCellType()) {
                        case Cell.CELL_TYPE_BOOLEAN:
                            System.out.print(cell.getBooleanCellValue() + "\t\t");
                            break;
                        case Cell.CELL_TYPE_NUMERIC:
                            System.out.print(cell.getNumericCellValue() + "\t\t");
                            break;
                        case Cell.CELL_TYPE_STRING:
                            System.out.print(cell.getStringCellValue() + "\t\t");
                            break;
                    }
                }
                System.out.println("");
            }
            inputStream.close();
            FileOutputStream out = 
                new FileOutputStream(new File("D:/workspace/test/test2.xls"));
            workbook.write(out);
            out.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}
